elliotwutingfeng

"""Estimate password entropy.

Entropy (bits) | Estimated Strength 
---------------|-------------------
0 to 35	       | Very weak
36 to 59	   | Weak
60 to 119	   | Strong
120+           | Very strong

WARNING: High entropy is of little use if the password has been leaked before in data breaches.

elliotwutingfeng

Installing Ubuntu 24.04 on a 2014 Macbook Air

• Recommended: Use LVM + Encryption.
• Expect slow installation speeds (the ports are USB 3.0 but are stuck at 2.0 speeds during installation)
• Do not bother with installing proprietary components during OS installation; it is too slow. Do it post-installation.

Wi-Fi

• Wi-Fi will not work out of the box. You will need a USB Wi-Fi dongle to download Wi-Fi drivers from the Internet.
• After installing the OS, plug in your Wi-Fi dongle and run the following commands to update the system, install Wi-Fi drivers, and upgrade snap packages.

elliotwutingfeng

def seconds_diff(time1: str, time2: str) -> int:
    def to_seconds(time_str: str) -> int:
        minutes, seconds = map(int, time_str.split(':', 1))
        return minutes * 60 + seconds
    return abs(to_seconds(time1) - to_seconds(time2))

elliotwutingfeng

Disable Google Assistant on Google Pixel devices

Stop Google Assistant from popping up whenever you plug in your earphones by disabling the "Google" app on your Google Pixel device (phone or tablet).

elliotwutingfeng

# mOTP algorithm in Ruby under a permissive license. Permission has been granted by original author Matthias Straub
# to redistribute the mOTP algorithm under the MIT License.
# References: https://github.com/elliotwutingfeng/motp/blob/main/CREDITS.md and https://motp.sourceforge.net
require 'openssl'

secret = '0123456789ABCDEF'
pin = '0000'
period = 10
digits = 6
unix_seconds = Time.now.to_i

elliotwutingfeng

claim-dapp.com
claim-mf-bdget24.xyz
cutt.ly
dappradarsas.com
eoro.io
fafuf.com
faqey.com
flufff.io
fluffland.io
fowun.com

elliotwutingfeng

#!/bin/sh
# SHA1, 30 seconds, 6 digits; the most common configuration.
# Adjust accordingly if your OTP credential uses different parameter values.

# Upon entering this command, type in your TOTP secret (it will not be echoed back to the screen), then press 'Enter'
stty -echo;oathtool --totp=SHA1 --time-step-size=30s --digits=6 --base32 -;stty echo

elliotwutingfeng

adb uninstall com.example.example_app

elliotwutingfeng

ruby -e "require 'openssl'; c = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'; puts (0...24).map { i = OpenSSL::Random.random_bytes(1).unpack('C').first % c.length; c[i..i] }.join"

# Or alternatively to avoid homoglyphs (https://en.wikipedia.org/wiki/Homoglyph)
# ruby -e "require 'openssl'; c = '3479AEFHJLNQRTYabdefghijnqrty'; puts (0...24).map { i = OpenSSL::Random.random_bytes(1).unpack('C').first % c.length; c[i..i] }.join"

elliotwutingfeng

Ruby on Archlinux

I thought I would document my setup, since it's somewhat non-standard but working quite well for me.

What this does

• Install major Ruby versions at their latest patch release
• Allow to switch between them seamlessly
• Use chruby
• Encourage bundler usage